Process of producing a binding and waterproofing bituminous soap for binding and waterproofing paving and building materials



Patented Dec. 8, 1925.

umrao STATES PATENT OFFICE.

LEONARD SCHADE VAN WESTRUM, OF NEW YORK, N. Y.

PROOESS'OF PRODUCING A BINDING AND BINDING AND WATERPROOFING P No Drawing.

Netherlands, residing at New York city, in

5 the county and State of invented. certain new and useful Improvements relating to a process of producing a binding and waterproofing bituminous soap for binding and waterproofing paving and building materials, of which the following is a specification.

The invention relates to the process of manufacturing and the applications of a bituminous binding material, which can be used cold. for binding paving materials such ;as stones, sand, cinders, clinkers, wooden blockfisgalso for binlging land 1watlegproo v. materia suc as ric s, stones, mixtures D and the like. 7 V

Emulsions of bitumen, made from liquid and hard asphaltums and other ingredients, which depend for their action as bin a ents upon their oxidation by the air, w%1en'mixed with cold stone or the like are liable to be washed away by rain in wet weather before the vola e agent has evaporatedsince the oxidation which forms an insoluble soap does not take place with sufiicient rapidity.

' It is well known, as described for example New York, have in my British Patent No. 6,823 of 1915, to-

emulsify bitumen by certain oils and alkalies which form an asphaltic emulsion, which, after mixing with the stone or other material, is rendered insoluble by the addition of hme, acids or the like. These methpds are,'however-, liable to reduce the binding quality of the asphaltic or bituminous binder. "It' is an'object of this-invention to produce a bitumm" ous soap which will oxidize with greater rapidity t an the soaps hitherto used For this urpose the oil mixed with the bitumen an the saponifier belongs to the classof drying oils, 'of which linseed oil is the type. The solidification which accompanies the oxidation by air ofthe dry- Application filed January of these materials, concrete WATERPROOFING BITUMINOUS SOAP FOR AVIN G AND BUILDING MATERIALS. A

19, 1925. Serial No. 3,494.

ing oil soap may be accelerated by the addition of a resin, such as common rosin, copal resin ordammar resin.

The soap is formed by saponification by an alkali, such of the drying oil and any other saponifiable matter contained in the mixture of bituminous material, such as asphaltum, tar or other bituminous substance, which mixture may include a non-drying vegetable oil like rape-seed oil, which, if used, will also be saponifiedby the alkali as caustic soda or potash,

' The following example illustrates the invention:-

30-50 heated in a kettle, provided with a stirrer,

until the temperature of the asphaltum is 90-100 C., 3-8 parts of common rosin and 3-8 parts of linseed oil are stirred in and 57-50 parts (according to the desired consistence of the finished soap) of caustic soda lye of 25 per cent strength and heated to parts by weight of asphaltum are the said temperature are added. The mix- 'ture is stirred until saponification is complete.

The cold soapy mixture is mixed, according to the use for which it is intended, with broken stones, cinders or-other materials above mentioned. The rate at which the mixture oxidizes and hardens depends on .atmospheric conditions and if found to be too rapid, producing too hard a binding material, the manufacture maybe modified by adding to the materials to be 's'aponified in accordance with the ,foregoin example, from 1 to 4 parts of, rape-see oil.

The mixture of bituminous soap and ma-' terial to be bound is compressed in the usual manerlby tampers, rollers or presses according to the use for which it is intended.

It will be noted that the glycerin duced by the saponification of the 011 not separated from the soap produced.

Having thus described said invention and-the'best means I know the nature of my,

of carrying the same into practical effect,

I claim;

1. A process of producing a binding and 7 water-proofing bituminous soap for bind- .ing and water-proofing paving and build in materials, 6 while hot, 30-50 tum, 3-8 parts of saponification is complete.

2. A process of producing a binding and 10 water-proofing bituminous soap which consists in mixing, parts by weight of asphalresin, 3-8 parts of linseed oil and 5-50 parts of caustic soda lye until or .binding and water-proofing paving and building' material, which consists in mixing, while hot, 30-50 parts by weight of asphaltum, 3-8 parts of resin, 3-8 parts of linseed oil, 1-4 parts of rape-seed oil, and 5-50 parts of caustic soda lye until saponification is complete. In testimony whereof I have signed my name vto this specification.

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